Also known as "body lice" or "pubic lice" - can be seen small black dots on the skin or hairs.
Commonly known as 'crabs'
These are tiny insects that live on human hair and can affect various body sites including the genital area. They can be quite difficult to see and can cause quite a nasty itchy rash. They are contagious and can be spread from person to person. Medical treatment and avoiding using towels, shared by other people are essential.
by Dr John Ashworth